Potential Use of Low-Cost Agri-Food Waste as Biosorbents for the Removal of Cd(II), Co(II), Ni(II) and Pb(II) from Aqueous Solutions

Sánchez-Ponce, Lorena; Díaz-de-Alba, Margarita; Casanueva-Marenco, M.J.; Gestoso-Rojas, Jesús; Ortega-Iguña, Marta; Riaño, M. D. Galindo; Granado-Castro, M.D.

doi:10.3390/separations9100309

Cited by 8 publications

(3 citation statements)

References 45 publications

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“…In addition, these agri-food wastes may contain harmful substances such as pesticides, pathogens, or heavy metals [19]. This poses a risk to the environment and human health.…”

Section: Characteristics and Compositionmentioning

confidence: 99%

From Waste to Resource: Valorization of Lignocellulosic Agri-Food Residues through Engineered Hydrochar and Biochar for Environmental and Clean Energy Applications—A Comprehensive Review

Escudero-Curiel,

Giráldez,

Pazos

et al. 2023

Foods

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Agri-food residues or by-products have increased their contribution to the global tally of unsustainably generated waste. These residues, characterized by their inherent physicochemical properties and rich in lignocellulosic composition, are progressively being recognized as valuable products that align with the principles of zero waste and circular economy advocated for by different government entities. Consequently, they are utilized as raw materials in other industrial sectors, such as the notable case of environmental remediation. This review highlights the substantial potential of thermochemical valorized agri-food residues, transformed into biochar and hydrochar, as versatile adsorbents in wastewater treatment and as promising alternatives in various environmental and energy-related applications. These materials, with their enhanced properties achieved through tailored engineering techniques, offer competent solutions with cost-effective and satisfactory results in applications in various environmental contexts such as removing pollutants from wastewater or green energy generation. This sustainable approach not only addresses environmental concerns but also paves the way for a more eco-friendly and resource-efficient future, making it an exciting prospect for diverse applications.

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“…In addition, these agri-food wastes may contain harmful substances such as pesticides, pathogens, or heavy metals [19]. This poses a risk to the environment and human health.…”

Section: Characteristics and Compositionmentioning

confidence: 99%

From Waste to Resource: Valorization of Lignocellulosic Agri-Food Residues through Engineered Hydrochar and Biochar for Environmental and Clean Energy Applications—A Comprehensive Review

Escudero-Curiel,

Giráldez,

Pazos

et al. 2023

Foods

View full text Add to dashboard Cite

show abstract

“…[19,20], or agri-food industrial waste and byproducts (such as tea and coffee waste, fermentation waste, sugar waste, etc.) [21,22] have been tested in the literature as biosorbents for the removal of various metal ions from aqueous media. Unfortunately, many of these materials already have a number of other established uses, which significantly reduces their widespread applicability in metal ions removal processes.…”

Section: Introductionmentioning

confidence: 99%

Biosorption of Technologically Valuable Metal Ions on Algae Wastes: Laboratory Studies and Applicability

Lucaci,

Bulgariu

2024

Water

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In the context of a circular economy that recommends the most efficient use of wastes, algae wastes have a huge potential for valorization. In this study, algae wastes obtained after the alkaline extraction of active compounds from two types of marine algae (green algae—Ulva sp. and red algae—Callithamnion sp.) were used as biosorbents to remove metal ions from aqueous effluents. The efficiency of these biosorbents was tested for Zn(II), Cu(II), and Co(II) ions, considered technologically valuable metal ions. The batch monocomponent experiments performed under optimal conditions (pH = 5.0; 4.0 g biosorbent/L; 22 ± 1 °C) showed that more than 75% of the metal ions were removed when their initial concentration was less than 1.25 mmol/L. The experimental data were well described by the pseudo-second-order kinetic model and Langmuir isotherm model. The high values obtained for the maximum biosorption capacity (qmax: Cu(II) (0.52 mmol/g) > Zn(II) (0.41 mmol/g) > Co(II) (0.39 mmol/g) for G-AWB, and qmax: Cu(II) (1.78 mmol/g) > Zn(II) (1.72 mmol/g) > Co(II) (1.66 mmol/g) for R-AWB) show the potential use of these biosorbents to remove such technologically valuable metal ions from industrial wastewater. This possibility was tested using industrial wastewater samples obtained from the metal coating industry. The quantitative removal (>91%) of Zn(II), Cu(II), and Co(II) ions was obtained when their initial concentration was adjusted to 50 mg/L. In addition, the rapid and efficient desorption of these metal ions from loaded biosorbents by simple treatment with small volumes of HNO3 (10−1 mol/L) further emphasizes the possibility of their recovery and reuse in the technological circuit. The results included in this study indicate that algae wastes have the potential to be used in industrial effluent decontamination processes and open new perspectives for the implementation of circular economy principles.

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“…[19,20], or agri-food industrial waste and by-products (such as tea and coffee waste, fermentation waste, sugar waste, etc.) [21,22] have been tested in the literature as biosorbents for the removal of various metal ions from aqueous media. Unfortunately, many of these materials have already a number of other established used, which significantly reduces their widespread applicability in metal ions removal processes.…”

Section: Introductionmentioning

confidence: 99%

Biosorption of Technologically Valuable Metal Ions on Algae Wastes: Laboratory Studies and Applicability

Lucaci,

Bulgariu

2023

Preprint

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In the context of circular economy that recommends the most efficient use of waste, algae wastes have a huge potential for valorisation. In this study, algae wastes obtained after alkaline extraction of active compounds from two types of marine algae (green algae – Ulva sp. and red algae – Callithamnion sp.), were used as biosorbents to remove metal ions from aqueous effluents. Their efficiency in the biosorption processes was tested for Zn(II), Cu(II) and Co(II) ions, considered technologically valuable metal ions. The batch mono-component experiments performed under optimal conditions (pH = 5.0; 4.0 g biosorbent/L; 22 ± 1C), showed that more than 75 % of the metal ions are removed when their initial concentration is less than 1.25 mmol/L. The very good fit of the experimental data with the pseudo-second order kinetic model and Langmuir isotherm model, and the high values obtained for the maximum biosorption capacity (qmax: Cu(II) (0.52 mmol/g) &gt; Zn(II) (0.41 mmol/g) &gt; Co(II) (0.39 mmol/g) for G-AWB, and qmax: Cu(II) (1.78 mmol/g) &gt; Zn(II) (1.72 mmol/g) &gt; Co(II) (1.66 mmol/g) for R-AWB) highlights the potential use of these biosorbents to remove such technologically valuable metal ions from industrial wastewater. This possibility was tested using industrial wastewater samples obtained from the metal coating industry. Quantitative removal (&gt; 91 %) of Zn(II), Cu(II) and Co(II) ions was obtained when their initial concentration was adjusted to 50 mg/L. Also, the rapid and efficient desorption of these metal ions from loaded-biosorbents, by simple treatment with small volumes of HNO3 (10-1 mol/L), further emphasizes the possibility of their recovery and reuse in the technological circuit. The results included in this study indicate that algae wastes have the potential to be used in industrial effluents decontamination processes and opens new perspectives for the implementation of circular economy principles.

show abstract

Potential Use of Low-Cost Agri-Food Waste as Biosorbents for the Removal of Cd(II), Co(II), Ni(II) and Pb(II) from Aqueous Solutions

Cited by 8 publications

References 45 publications

From Waste to Resource: Valorization of Lignocellulosic Agri-Food Residues through Engineered Hydrochar and Biochar for Environmental and Clean Energy Applications—A Comprehensive Review

From Waste to Resource: Valorization of Lignocellulosic Agri-Food Residues through Engineered Hydrochar and Biochar for Environmental and Clean Energy Applications—A Comprehensive Review

Biosorption of Technologically Valuable Metal Ions on Algae Wastes: Laboratory Studies and Applicability

Biosorption of Technologically Valuable Metal Ions on Algae Wastes: Laboratory Studies and Applicability

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